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velikii [3]
3 years ago
8

Una profesora compra 28 manzanas para compartir con sus estudiantes; al día siguiente revisa la cesta con las frutas y ve que se

le han dañado 2/7 del total de manzanas que había comprado. Para reponer las frutas dañadas ella debe comprar
Mathematics
1 answer:
valina [46]3 years ago
6 0

Answer:

La profesora debe comprar 8 manzanas para reponer la cesta de frutas.

Step-by-step explanation:

La profesora debe reponer la cesta de frutas por la cantidad de manzanas que se encuentran dañadas. La cantidad de manzanas dañadas es igual a las dos séptimas partes del total de manzanas. Es decir:

x = \frac{2}{7} \times (28\,manzanas)

x = \frac{56\,manzanas}{7}

x = 8\,manzanas

La profesora debe comprar 8 manzanas para reponer la cesta de frutas.

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-2 < 3x+4 < 31 find x
Eva8 [605]

First rewrite into 2 inequalities,

-2\lt3x+4

3x+4\lt31

Solve each of the inequalities,

-2\lt3x+4\implies3x\gt-6\implies x\gt-2

3x+4\lt31\implies 3x\lt27\implies x\lt9

So our x is between -2 and 9 which can be written as,

-2\lt x\lt9

or as an interval,

x\in(-2,9)

Hope this helps :)

8 0
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balandron [24]

Answer:

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Explanation:

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